Improvement in heaters



`UNITED STATES. Al'?.L\'I13N'T TOFFICE.. i

JOHN cninoorr, or BROOKLYN.. New YORK.

lMPROVEMEN'T' IN HEATERS.

Specication forming part of Letters Patent No. 49,1504, dated August22,1865; antedated August 1 5, 1865.

To alt whom it may'conce'm:

Beit known that I, JOHN GHLLGOTT, of No. 70 Fulton street, in the cityof Brooklyn, county of Kings, and State of New York, have invented a newand useful Improvement in Hot-Air Stoves and Furnaces for'WarmingBuildings l and Apartments; and I herebyV declare that the following isa full, clear, and exact description ofthe same, reference being had tothe accompanying drawings, forming part of this specification, in which-Figure l is a longitudinal vertical section of a hot-air furnace in theplane indicated by the` lin-e w w in Fig. 2. Fig. 2 is a transversevertical section of the same in the plane indicated by the line zz inFig. 3. Fig. 3- is a longitudinal vertical section of thc same in theplane' lndicated by the line y y in Fig. 2. Fig. 4 is,

f This invention relatestostoves and furnaces for warming buildings andapartments by the introduction of heated air, or by producing a constantcirculation of the air in the building or apartment by contact with theheated surfV faces of the stoveor furnace. f

Its object is partly to econom-ize fuel and partly to obtain a largeheating-surface at a moderate heat, and thereby obviate the unpleasantei'ects of very highly-heated surfaces; and to this end itconsists,'rst, in surrounding an air-hcating chamber with a continuoussystem of flues, through which the gaseous products of combustion from are below the said chamber are caused to circulate around and in contactwith the exterior of the said chamber before passing to the chimney oruptake; sectn'dly, in providing within the said chamber aiontiuuoussyste-n1 of flues, through which a portion of the gaseous products ofcombustion are caused to circulate back and forth on their way to thechimney or uptake, while a portion ot' such productsicirculatescontinuously back and forth in contact with the exterior of the saidchamber. I

To enable others skilled in the art to make and use my invention, I willproceed'to describe it with reference to the drawings.

A is an air-heating cham ber of parallelopip- `edal or other suitableform, made of iron or# closed air-space, a, between them, which isfilled with air to act as a uon-conductorof heat. Between tbe verticalsides of the chamber A and' the inner shell, O, there is a c ontinuonsseries of dues, b, which entirel surround the chamber,

and through which a portion of the gaseous products of combustion fromthe fire-place F below,` entering the casing B C through an opening,f,

(Figs. 2, 3, and 5,) in the bottom, will circulate entirely around thesaidchamber before escap` ing to the chimney-D througha pipe, g, Fig.

1. The manner in which the lower flue, 1),.s

connected with the upper one to render the circulation of the gasescontinuous is repre-` 1 sented ath in Figs. 2 and 5...

Only two fines, b b, are represented, but there maybe three or more, sothat the circulation ofthe gases may be three or more times entirelyaround the chamber A. 3

Between the shell B and the bottom of the.

chamber A there are ilues c c, through which another portion of thegases from thelire,`en-

4tering the casing B C through an opening, t,

in the bottom, circulate back and' forth one or more times beforeentering the continuous series of fines jk k. l, provided within andextending through `the chamber A, and Vfrom whence the said portion ofthe .gases escapes into a continuous seriesof flues, m m, between thetop of the chamberA and the shell? B,a`nd` thencethrough a pipe, n, tothe chimney D.

rlhe fines kik, which extend longitudinally and horizontally through thechamber A, are representedas only two in number, but their number isnotlimited and by a proper number of 'themlband Va suitable arrangementof openings @,Fig. 1,at opposite ends alternately,

the gases-may be made to circulate hack andV forth through the interiorof the chamber A.-

In the top of the air-heating chamber Athere.` is an opening,1,coi11i'nnnicating withan open ing, e, inthe top of the casing B C, forthe exit of the warmed air from thesaidchamber through'a pipe. or duct,E, whichtleads vinto the apartment or `apartments to bewarmed, withabranch, E', communicating to each apartment whenmore. than one is to bewarmed by the same furnace, rlhi's duct'` is mede with double walls ltoprevent loss,l of heat by radietion,

I have represented no means of introducing fresh air into the chamber A,as this may not be necessary,` an upward' circulation of the heated airfrom the said chamber through the duct E 4to the apartment or apartmentst0 be warmed causing at the saine time e downward circulation of coolerair from the apartment through the said duct to the chamber A.

What I claim as my invention, and desire to secure by Letters Patent,is.-

1. Surrounding the air-heating chamber of a stove or furnace with econtinuous system of tlues, b b, substantially as herein described, iuwhich the gaseous products of combustion from the fire nrc caused tocirculate continuously two or more times completely around the saidchamber before passing to the chimney, subv stantially as herein setforth.

2. In combination with lrhe continuous system of' ues b, surrouudiu gthe sides of the airn heating ch amber, the continuous system of ilues cj 7c l m, under, through the interior of, and above the said chamber,substantially as herein described.

Witnesses: JOHN GHLGOTT.

HIPPOLYTE MALI, J. W. CooMBs.

